first of all, yes, it’s genuine. Collezione Sartoriale was LB’s couture line. I’m not sure it’s around anymore, perhaps under a different name. I’ve had a few pieces in the past and they are high quality.
As for who made it? I’m not sure. Brands like that will often use different shops based on cost and other factors. If it was made by Attolini, it was made by them to the specs that LBCS called for and not necessarily to the same specifications as Attolini.
Thank you guys so much, that inform me alot, I really appriciated your words...Definitely the Attolini made for LB. As to whether or not it is a comparable product, lots of discussions on threads Here years ago. What I would opine, having handled both is that LB C S is high quality stuff whether made by Attolini or Saint Andrews (I am sure others.). Even if it is not 100% up to Attolini mainline standards it is a high quality garment that would be in the top level (assuming you don’t have twenty levels) of RTW clothing. Only a tailor or SF regular might be able to tell the difference and even then, probably need close inspection.
However, please be aware that this is 99% an orphaned suit jacket and while not impossible, requires expert level sartorial knowledge and ability to wear with odd trousers.
btw, do you know who is the maker for LB Satoriale line right now?